What Is a Loop Back Address?
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A loopback address is a special IP address (most commonly 127.0.0.1) used to test network software and hardware. It is referred to as the “localhost” and is seen as the equivalent of “loopback” in the networking world. The loopback address allows a user to “ping” the local machine, or the computer the user is currently working on, and receive a response without actually connecting to any other machine.
A loopback address is a special IP address (127.0.0.1) used to test network services and to refer to the local computer or localhost. It is used to establish network connections to the local machine without requiring a physical network connection.